Bug 2513649

Summary: CVE-2026-58044 nodejs22: Node.js: Request smuggling via HTTP client header truncation [fedora-all]
Product: [Fedora] Fedora Reporter: Joel Chamberlain <jochambe>
Component: nodejs22Assignee: Jan Staněk <jstanek>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: unspecified    
Version: 45CC: aradchen, jstanek, tjuhasz
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["ac8577e8-496d-45b7-88b3-ab9fc31a441c"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Joel Chamberlain 2026-08-10 20:19:30 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible `IncomingMessage` headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond `maxHeadersCount` / `maxHeaderPairs` from `req.headers`, `req.rawHeaders`, and `req.headersDistinct`, while still using those omitted headers internally for HTTP message framing. In particular, `Content-Length` can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Comment 1 Aoife Moloney 2026-08-17 15:50:59 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.